Stamp-mill.



No. 815,936. PATBMTBD MAR. 27, 1906.

M. P. Boss.

STAMP MILL.

APPLICATION FILED JAN. 14, 1903.

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M. P. Boss.` STAMP MILL.

APPLICATION FILED yIAN. 14, 1903.

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WITNESSES: INVENTOR I No. 815,936.l PATBNTED MAR. 27, 190e.

ya IENTOR a@ v @ma UNITED `STATES PATENT onnion.

MARTIN PRIOR BOSS,` SAN FRANCISCO,` CALIFORNIA.

specication of Letters Patent.

Patented March 27, 1906.

Application lecilanuary 14,1903; 'Serial No.-139,00'7..

T0 @ZZ t mobycol/wayin:y f- Be it known that I, MARTIN PRIOR Boss, a

' citizen of the United States, residing at San the following is a seciication.

Francisco, county of San Francisco, State of j California, have inventedcertain new and useful Improvements in Stamp-Mills of which My inventionre ates to stamp-mills of the type usedfor reducing or crushing rock,ores,

andthe like ,'and it consistsinaparticular.

stamps, making a. veryA cumbersome topheavy affair requiring very strongbracing;

The; object of my invention is to greatlyk simplify this constructionandV at the same A -timeimprove it by giving freer accessibility Vto theworking parts. To accomplish `this end, Iv raise the s1ll to a heightproper to take `the cam-shaft boxes thereon., which inciden` tallygives-free head room for a man to walkl and work below it unhampered bypostsfand braces. 'These sillsf` I support atv the ends. One. end Iprefer to rest on the'retaining-wall under the ore-bin andthe otherendto 'a girder, which in turn is supported by a series ofpillarsconveniently spaced. This arrangement brings my lower uide-girth at` ornear the lower side of the sil or cross-girder, the upper guide-girthbeing carried by a light post lor standard 1n llieu of the massive-rying all ofthe moving parts.

post, VCar- The accompanying drawings-willserve to illustrate myinvention, in which similar numerals indicate like'parts. Y Figure 1 isa side view of a stamp-mill wit section.

showing a portion of the supporting-frame broken away. Fig. 3 is a planview, Figa` is a top view of a portion of the lower guidegirth and a topview of one of the guides for the stamp-stem. l Fig. 5 is a side view ofone of the guides Jfor the stamp-stem. Fig. 6 is a transverse section ofa guide-girth at its cutaway portion. A

In the drawings, 5 indicates the retainingparallel.

wall ,of an ore-bin. Arranged opposite to :this wall are thesupporting-pillars 6. Inthe `drawings these pillars` are shown, as con:-structed of stone.V They may, however, be rconstructed as iron columns,wooden beams, `or otherwise. Arranged across the top of the-V pillars 6is a longitudinal girder 7 That shown in the drawings is formed vas anordinary I-beam. It may, however, be formed-ofl a truss-beam or akwooden beam. Arranged between the retaining-wall 5 and the girder 7 arethe sillsS, each of which has one end located in a recess'in the wall `5and the other end secured to the girder 7. These sills, like the girder7, may be lebeams, truss-beams, or wooden beams; "In the plan view,Fig.y .3, fourol" such sills are shown arranged e ui.- distant and insuch manner that a sill wil be located vertically over each end of amortar.- box. Secured tothebottom of the sillsf8 in any suitable mannerisa guide-girth 9. l This girth I- prefer to make square in sectionwhere mortar-boxes 11 are the guides 1,2 for the stamp-stems; .-(Bestshown in Figs. 4-and 5,) VThese guides consist of thesleeve portion 1.3and the projecting arm portiongl/i. The arm Aportion 14 is shaped at thebottom 15 toreceive'the cut-away portion 16 of they guidegirths 9 9..In-order to prevent the guides 12 from rotating on. the guide-girths, Iprefer to make the sides of the shaped portion 15 `and the cut-awayportion 16 of the guide-girths The cut-awayportion of theguidegirths 99, aswell as the shaped portion of the varm 14, may,however, vbe givenany` desired section-as, for instance, a. circular section. a portion ofthe supporting-trame, mortar, and the supporting-base for the mortar in.Fig. 2 is a front view of a gangl stamp-mill consisting ofthree. stampsand To secure the guides 124 in positiononthe guide-girths, I may makeuseiof the hook-b olt it is attached to the sills 8 It, however, may yIOO 12 and arranged to reciprocate therein is the stamp-stem 19. Securedtothe bottom of the stemis a stamp-head 20, on the endofV to thestamp-stem 19 above the sill 8 is a block or tappet 24, and mounted upona shaft 25, having its bearings in boXes 26, is a shaped cam 27.

28 indicates a stop pivoted on a sill 8, such as is commonly used tohold the stamp in a raised position.

Arranged at the left of the stamp is a feedchute 29 from the ore-binadapted to discharge upon an automatic feed-table 30. The

table 30 is mounted upon a bell-crank lever 31, pivoted at 32. The shortarm of the lever is connected to the table 30, and the long arm iscarried downward and connected, through a turnbuckle 33, with a secondlever 34, pivoted at one end at 32 and having its opposite end carriedforward and upward under the tappet 24. On the left-hand end of thetable 30 is a bracket 35, to which is connected a rod 36, which passesthrough an opening in a bracket 37, secured to one of the sills 8.Connected to the rear end of the rod 36 are the adjusting-nuts 38, andbetween these nuts and the upper portion of the bracket 37 is a coiledspring 39. Situated under the forward end of the table 30 and adapted todischarge into the mortar-box 22 is a chute 40.

It will be understood that when the stem 19 is reciprocated by theaction 'of the cam 25 the tappet 24 in falling will strike the end ofthe lever 34, which acting through the bellcrank 31 serves to swing thetable 30 backward and to compress the spring 39, which when the tappet24 moves upward returns the table to its original position.

41 indicates a pipe through which water may be discharged into the chute40.

I do not limit myself in any wise to the employment of an automaticfeed-table of the character described, as other well-known tables may beused in its place.

It will be observed from the construction shown and described that thesupport for the cam-shaft boxes is located wholly above the mortar ormortars and that access may be had to all sides of the mortars unimpededby any portion of the supporting-frame.

I wish it understood that I do not limit myself to the preciseconstruction of the supporting-frame shown and described, provid- -ingthe sills and the operating mechanism for the moving parts are locatedabove the mortar, as many changes may be made in such frame without inany wise departing from the intent of my invention. I wish it understoodthat I dopnot claim the features of construction of the mortar asillustrated and described, as the same has been made the subject of acopending application, Serial No. 139,006, filed January 14, 1903.

Having thus described my invention, I claim- 1. In a stamp-mill, thecombination with a guide-girth of rectangular cross-section havingreduced cylindrical portions shaped to provide parallel flats, of guidesmounted on such reduced portions, and clamp-bolts securing said guides.

2. In a stamp-mill, the combination of a longitudinal girder,supporting-pillars therefor, situated entirely independent of themortar-boxes of said mill, a series of parallel sills connected at oneend to said girder, means for supporting the opposite end of the sills,guideirths connecting said sills, guides on said gui e-girths, a seriesof mortar-boxes arranged in line, a series of stamps movable in saidguides, and means mounted on said sills for reciprocating the stamps.

3. In a stamp-mill, the combination of a series of rectangular mortarswith diagonals in alinement having their screen-openings arranged at anangle to the cam-shaft, a series of sills located above said mortars andentirely independent of said mortars, a series of stamps adapted toreciprocate midway between said sills, guide-girths connecting saidsills at top and bottom, guides on said guidegirths, in which the stampsreciprocate, tappets on said stamps, a cam-shaft mounted on said sillsparallel with the guide-girtlis, and cams on said shaft located underthe tappcts on the stamps.

4. In a stamp-battery, the combination of a suitably-supported I-beamplatform, elevated with respect to the mortars, and made up of twolongitudinal girders and a series of transverse ones, any two of whichcarry the mountings of one stamp arranged as followscam-shaft carried bytop flange, lower guidegirth attached to bottomilange, upper guidegirthsupported by framing from the platform, guides on each girth, and astainp-stem reciprocating therein.

In testimony whereof I alIiX my signature in the presence of twowitnesses.

MARTIN PRIOR. BOSS.

Witnesses:

D. C. KELLEY, ALLEN HILL.

